For multi-colour 3D printing, a daily twin extruder 3D printer, one which contains a single mount for the twin nozzles, is ok. But don’t assume it for being as speedy as only one extruder 3D printer, thinking of the extra body weight within the print head influences the print velocity. https://andres89i38.educationalimpactblog.com/51990986/detailed-notes-on-multicolored-3d-printer